The roof would be totally replaced, wiring, plumbing also.

Raising rents will add value, as well as I plan on to install central air and to replace a few old windows on the building.

Your major systems that were replaced at the beginning should still have at least 50% of their useful life remaining. 

or next Q:will i have to depreciate building value of 330K over 39 years or - next QCan i use the replacement value from the insurance (400K) and depreciate over 10 years (useful life) or 39 years?

All can be fixed with the replacement of the toilet and wax ring...which shouldn't cost you more than a couple hundred bucks.The foundation issue is a completely different story.

We surprisingly have received replacement bookings in Kissimmee for March and April.

replaced the flooring in entire house, new kitchen and updated bathrooms (new toilets, vanities, ..)

I don't think it is BS, but good luck trying to get a 10 or 20k repair/replacement paid.

BUT if it ever needs to be replaced the code is stringent & the upgrade is very expensive.

As far as personal qualities goes:1) Quality of workmanship2) Quality of workmanship3) Quality of workmanship4) No Alcohol consumption on the job5) Dependable show ups6) Experience on a particular type of job (if semi-complicated such as countertop installs vs light bulb replacement)7) Doesn't need CONSTANT supervision or granular directions8) Pride of workmanship when finishedI picked these pics off of the internet to illustrate 7) and 8).This guy wouldn't be a good fit for me (although for some people he would) because "You didn't tell me you wanted it smoothed out Boss" or "That's the way it's done", or "That's all you paid for"--isn't what I'm looking for in a workman.Compare the above pic to the one below, that has been completed in a "Neat and workmanlike manner".